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Full text of "The Cambridge Natural History"

4l6                             CAPE HUNTING DOG                             CHAP.
likeness of some of the cheek teeth to those of the more primitive
Aretoids. The angle of the lower jaw is inflected, a character,
however, which seems to be more general than is usually allowed
among animals not referable to the Marsupials. It is possible
that Otocyon is a persistent Creodont-like form which has
developed in a direction curiously, and in a most detailed
fashion, parallel to the Dogs. If, however, we may assume the
addition of the molar, then this anomalous but not necessarily
untenable conclusion is obviated.
The genus Cuon, or Cyan, has been instituted for the two or
three species of Eastern Dogs (<7. primaevus, C. duJckunensis, etc.)
which agree with each other in the constant loss of a molar in
the lower jaw, or, it should be said, almost constant loss, for
the missing tooth is occasionally represented. The latter of the
two species mentioned, the Dhole, is, like its congeners, an
animal which hunts in packs; it is said to hunt even the
ferocious Tiger, and to be thus one of the few animals which can
face the largest and fiercest of the Carnivora.
The genus Lycaon is a very distinct type, being differentiated
from other Dogs by the possession of only four toes on both
fore- and hind-limbs, and by the dental formula, which is Pin 
M ||-. The one species is L. pictus, the Cape Hunting Dog. It is
singularly like a Hyaena1 in general appearance; the ochraceous
grey ground-colour with black markings and the long ears pro-
duce this likeness. The animal has got its vernacular name
from the habit of hunting in packs. Its range is over a good
part of Africa. The occurrence of this species (or at least genus,
for the name L. anglicus has been used) in caves in Glamorgan-
shire seems to show that it is a comparatively recent immigrant
into Africa. As to its visceral structures, Zycaon,2 does not differ
widely from other Dogs. It lias, however, no lytta beneath the
tongue. The intestines are thus divided: large, 9 feet 1 inch ;
small, 1 foot 3 inches. This contrasts with the proportions
observable in some other Dogs. While other Dogs have but a
cartilaginous rudiment of the clavicle, Lycaon has a considerably
larger representative of this bone.
The bulk of the Dogs, Wolves, Foxes, and Jackals are thus
left over for inclusion in the genus Oanis. But the numerous
1 Temmmck, its original describer, placed it in the genus Hyaena.
 See Qarrod, JProc* Zool. Soc. 1878, p. 373.